#include<bits/stdc++.h>
#define sd(n) scanf("%d",&n) 
#define sld(n) scanf("%lld",&n)
#define pd(n) printf("%d", (n))
#define pld(n) printf("%lld", n)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define fi first
#define se second
const int N = 2e5;
const int maxn = 1e6;
typedef long long int ll;
using namespace std;
//----------------------------------------------------------------------------//

void solve()
{
	int l, r, a;
    cin >> l >> r >> a;
    int x = r - r % a - 1;
    if(r % a != a - 1 && l <= x) cout << x / a + x % a << endl;
    else cout << r / a + r % a << endl;

}

int main()
{
	int T;
	sd(T);
	while (T--)
	{
		solve();
	}
	return 0;
}